I have a pair of SL3s I bought second hand in year 2000. They served me well for 20 years. I recently purchased a pair of EM ESL x speakers rather than getting new panels for my SL3s. I am happy with the new speakers. What can I do with the old SL3s? The electronics are good as are the woofers, but the panels are on their way out and the cabinets have significant wear. Just wondering if I can recycle or sell the parts?